Re: Suwari Waza
I'm sure this thread was a great help to the OP...
Can someone please explain to me from an anatomical, kinesthetic, and physiological point of view how seiza/shikko/suwariwaza damages the internal structure of one's knees. Because I don't think that it does. Abrasion and bruising to the skin definitely, but doesn't give someone bad knees.
Regarding stretching and warm ups:
If we kept ourselves healthy no warm up would be necessary on most occasions. Unfortunately, the vast majority of us are not healthy, and then proceed to add poorly performed physical activity in too large a quantity on top of it.